The HP DeskJet 712C uses two compatible ink cartridges. The black ink replaces the HP 45 (51645A) and prints about 1,100 pages. The tri-color ink replaces the HP 23 (C1823D) and prints about 690 pages. Both are standard capacity. The same supplies also fit the DeskJet 710C, DeskJet 720C and DeskJet 722C. Same-day shipping on most orders.
